The heart of the "TANKER" is built on our famous BAD556-LW Billet 7075-T6 Aluminum Lightweight Receiver Set and the BAD-CSSVERT PDW Stock System. It is chambed in .300BLK with a 7.5" barrel shrouded in 6.7" RIGIDRAIL M-LOK free float rail system and has an overall length of 20.1". It is built as a factory SBR (Short Barrel Rifle) so all NFA rules apply.